Niwa Nagashige, the eldest son of the loyal general Niwa Nagahide under Oda Nobunaga, entered the realm of warfare at the tender age of 12. His initial taste of battle occurred alongside his father during the confrontation against Shibata Katsuie under Toyotomi Hideyoshi at the Battle of Shizugatake. In the following year, at the age of 13, Nagashige stepped into the shoes of his ailing father and led the Niwa army at the Battle of Komaki-Nagakute.
Tragedy struck at the age of 14 when Niwa Nagashige found himself thrust into the position of the head of the Niwa clan and in charge of his father's extensive 1,230,000 koku estates following Nagahide's passing. While Nagashige's father was wed to an adopted daughter of their master, Oda Nobunaga, Nagashige's union was with Ho-onin, the actual 5th daughter of Nobunaga.
The shifting tides of power and alliances brought challenges to Nagashige's legacy. Accused of treachery during the 1585 attacks on the Toyama region, Toyotomi Hideyoshi demoted Nagashige from 1,230,000 koku to a mere 150,000 koku. Further setbacks occurred two years later during the Kyushu subjugation, with Nagashige's income reduced to a meager 40,000 koku. However, his valor at the Siege of Odawara led Hideyoshi to restore his fortunes, elevating his income to 120,000 koku.
Remaining loyal to the Toyotomi clan, Nagashige aligned himself with the Western forces under Ishida Mitsunari at the Battle of Sekigahara. This alliance resulted in the loss of his daimyo status and possessions. Recognizing Nagashige's value, Tokugawa Ieyasu granted him 10,000 koku and land at Futsuto in present-day Ibaragi Prefecture in 1603. The Niwa family name was fully reinstated after Nagashige's exemplary service in the Battles of Osaka in 1614 and 1615, where he fought under Tokugawa colors. He received lands at Edosaki along with 20,000 koku, followed by an increase to 50,000 koku and the Tanakura (Fukushima) Domain in 1622. In 1627, he was transferred to Shirakawa in modern-day Fukushima Prefecture, earning 100,700 koku. During his tenure, he expanded and reconstructed Komine Castle.
Niwa Nagashige breathed his last on April 30, 1637, just shy of his 66th birthday. His final resting place is at the Enmei-ji Temple in Shirakawa, Fukushima Prefecture, a testament to his enduring legacy in Japanese history.
See also
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Kyōgoku Takatsugu
From the very beginning of his career, Takatsugu served under Oda Nobunaga and was married to Nobunaga’s niece, which secured him a strong position at court and close ties to one of the most powerful clans of the era. However, the events of 1582 drastically changed his fate. When Akechi Mitsuhide rebelled against Nobunaga and treacherously killed him at the Honnō-ji Temple, Takatsugu sought to take advantage of the ensuing chaos to strengthen his own standing. He launched an attack on Nagahama Castle in Ōmi Province, hoping to expand his territories. The assault, however, was repelled, and soon after, Mitsuhide was defeated by Toyotomi Hideyoshi’s forces at the Battle of Yamazaki, leaving Takatsugu without allies or support.
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Kato Yoshiaki
Yoshiaki, a loyal vassal of the Oda clan, first distinguished himself as a talented warrior during the Battle of Shizugatake in 1583. For his bravery and outstanding military achievements, he was included in the famous group known as the “Seven Spears of Shizugatake” — an elite band of samurai celebrated for their exceptional courage in that battle. Later, Yoshiaki became one of Toyotomi Hideyoshi’s naval admirals and took an active part in his subsequent military campaigns. He commanded warships during the expeditions to Kyushu and the siege of Odawara, demonstrating not only valor but also exceptional leadership and strategic skill. For his loyal service and effective command, Yoshiaki was granted an estate in Matsuzaki with an annual income of 100,000 koku of rice — a symbol of significant rank and prosperity.
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Katagiri Katsumoto
Katsumoto was born into the family of Katagiri Naomasa, who came from an ancient and noble lineage. The Katagiri clan had served the early shoguns of the Minamoto house for over five centuries and held lands in the northern part of Shinano Province.
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Kasuya Takenori
There are several versions regarding the origins of Takenori. According to one account, he was the second son of Kasuya Tadayasu, a samurai who served the Bessho clan in Harima Province. In 1577, when Toyotomi Hideyoshi launched his campaign in Harima, on the advice of his close retainer Kuroda Yoshitaka, also known as Kanbei, he took Takenori into his service as a page. In this position, the young warrior participated in the siege of Miki Castle, which lasted from 1578 to 1580 and was aimed at suppressing the rebellion led by Bessho Nagaharu.
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Kajiwara Kagetoki
One of the finest generals and most loyal allies of Minamoto no Yoritomo, Kagetoki gained a notorious reputation as a jealous rival and persecutor of Yoshitsune, the legendary commander of the Genpei War. Kagetoki was an intelligent, calculating, and cautious man.
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Kawakubo (Takeda) Nobuzane
Nobuzane was the seventh son of Takeda Nobutora and the half-brother of the famous Takeda Shingen. The identity of his mother is unknown, as is the exact year of his birth. It is believed that he was born sometime in the 1530s. When Nobuzane reached adulthood, he was sent to the village of Kawakubo, located in the northern part of Kai Province near the border with the Saku region. His duty was to guard the road leading north. In that village, he built a residence and changed his family name to Kawakubo.
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Imagawa Sadayo
Imagawa Sadayo was one of the most outstanding figures of his era. Alongside Kusunoki Masashige and Kitabatake Chikafusa, he was considered one of the greatest generals and strategists of his time. In addition to his military talents, Sadayo was also a poet and historian, and his literary abilities earned him a prominent place at court and in scholarly circles.
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Ikeda Motosuke
Motosuke was the son of Ikeda Tsunooki and the older brother of the famous military commander Ikeda Terumasa. Sources differ on his year of birth—it was either 1559 or 1564. Motosuke was married to the sister of Oda Nobutada, the eldest son of Oda Nobunaga. Thus, Nobutada's son, Oda Hidenobu, was his nephew.
